Thomas O'Barr, M.D.
NPI 1255334033 · Internal Medicine Physician · Woodstock, GA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas O'Barr, M.D. is a Internal Medicine Physician provider in Woodstock, GA (NPI 1255334033).
Provider details
- NPI number
- 1255334033
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 024472 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
21 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-05-24
- Last updated
- 2018-01-29
Frequently asked questions
- What is Thomas O'Barr's NPI number?
- Thomas O'Barr's National Provider Identifier (NPI) is 1255334033, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas O'Barr's specialty?
- Thomas O'Barr is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas O'Barr located?
- Thomas O'Barr's practice location on file with NPPES is 1192 Buckhead Xing Ste E, Woodstock, GA 30189-4255.
- What is Thomas O'Barr's phone number?
- The practice phone number listed in the NPPES registry for Thomas O'Barr is (678) 494-4450.
- Does Thomas O'Barr accept Medicare?
- Thomas O'Barr is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas O'Barr's NPI active?
- Yes — Thomas O'Barr's NPI (1255334033) is active in the NPPES registry as of the last update on 2018-01-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.